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Arctic Sea Ice Extent (September) vs US Air Passengers Carried
Arctic Sea Ice Extent (September) and US Air Passengers Carried correlate at r = -0.77 over 45 years (1979–2023), p < 0.0001. With the time trend removed, r = +0.10. Likely spurious (shared time trend).
Verdict: Likely spurious (shared time trend). Both series mostly just trend over time. After removing that trend the correlation collapses to 0.10 — the relationship is probably coincidental, not causal.
- Pearson r
- -0.77
- p-value
- < 0.0001
- Years compared (n)
- 45 (1979–2023)
- 95% confidence interval
- -0.87 to -0.62
- Correlation with the time trend removed
- +0.10
Sources
- Arctic Sea Ice Extent (September) (million km²): NSIDC. Mean Arctic sea ice extent in September, the yearly minimum (NSIDC Sea Ice Index).
- US Air Passengers Carried (passengers): Our World in Data. US Air Passengers Carried (Our World in Data: Air transport, passengers carried).
Related pairs
- US Air Passengers Carried vs US Life Expectancy (r = +0.94)
- US Air Passengers Carried vs US Median Age (r = +0.94)
- US Air Passengers Carried vs US Population (r = +0.94)
- US Air Passengers Carried vs US Urban Population (r = +0.92)
- US Air Passengers Carried vs US Rural Population (r = -0.92)
- Arctic Sea Ice Extent (September) vs US Mobile Subscriptions (r = -0.92)
Correlation does not imply causation. How the verdict is worked out.